排序方式: 共有26条查询结果,搜索用时 0 毫秒
21.
22.
23.
24.
生物组织在He-Ne激光照射下,通过测量组织表面的漫射光分布,利用漫射近似所得到的解析表达式,反演其光学特性参数,可实现光学特性参数的无损测量;通过对牛肌肉、猪肉和鸡肉生物组织的测量,获得了这些组织的吸收系数和有效散射系数. 相似文献
25.
26.
Influence of Boundary Condition and Diffusion Coefficient on the Accuracy of Diffusion Theory in Steady—State Spatially Resolved Diffuse Relfectance of Biological Tissues 下载免费PDF全文
The applicability of diffusion theory for the determination of tissue optical properties from steady-state diffuse reflectance is investigated.Analytical expressions from diffusion theory using the two most commonly assumed boundary conditions at the air-tissue interface and the two definitions of the diffusion coefficient are compared with Monte Carlo simulations.The effects of the choice of the boundary conditions and diffusion coefficients on the accuracy of the findings for the optical parameters are quantified.and criteria for accurate curve-fitting algorithms are developed.It is shown that the error in deriving the optical coefficients is considerably smaller for the solution which uses the extrapolated boundary condition and the diffusion coefficient independence of absorption coeffcient,compared to the other three solutions. 相似文献